Thrashing machine



Dec. 6, 1927..

J. WOLF THRASHING MACHINE 2 Sheets-Sheet 1 Filed Sept. 24, 1926 gm/van T01, JACOB WQLF Dec. 6, 192 7.

J. WOLF THRASHING MACHINE Filed Sept. 24, 1926 2 Sheets-Sheet P gwuwnloz JA C 05 W01. F

aitozmq Patented Dec. 6, 1927.

)JIU'NITED STATES noon won, or PRINCETON, mmmsom.

*rnnasnmo MACHINE.

Application med September 24,- 1926. Serial No.'137,448.

' This invention relates to thrashing machines and the primary ob ect is to provide means of a novel, practical. and efficient nature for feeding the straw which is delivered from the ordinary straw rack of a grain separator, into the customary fan drum, from which the straw is forcefully expelled, by a fan, through the stacker chute and away from the machine. Further and more specific objects will be disclosed in the course of the following specification, reference being had to the accompanying drawings, wherein:

.Fig. 1 is a side elevation of the rear end of a thrashing machine embodying my invention, various parts being removed for purpose of illustration.

Fig. 2 is a plan view as seen substantially on the line 2-2 in Fig.1.

Referring to the drawings more particularly and by reference characters A designates the frame work of a thrasher having a shaker frame or straw rack B, carried for oscillatory movement by vibrating arms C,

t a transversely inclined chute D, which receives the gram-freed straw delivered from the risers E ofthe straw rack B, and directs it, over the grating F of a grain saving hopper, into the central opening of a fan drum G, having a fan H which blowsthe straw and chaff up through the straw chute I and away from the machine. These parts are all'of common andwell known construction. And in this type of machine it is of almost equally common knowledge that although the straw delivered from the straw rackis supposed to pass down the chute 1) into the fan drum G, it will not always do so, especially when the straw is inclined to be heavy from moisture. Under such circumstances, and frequently under the most favorable circumstances, the straw and chaff will lodge in the chute D, and will stay lodged until the operator dislodges it with his hands or a pitchfork. This is not only dangerous, if done when the machine is running, but requires almost constant attention of the operator, who must continually watch for the clogging, and if the chute is even only partly obstructed for any length of time it obviously reduces the eificiency of the machine as a whole.

- To overcome these difficulties, and to prevent any clogging in this part of the machine whatever, I provide the chute D with an inner apron 3, the same being somewhat angular in crosssection, sons to fit snugly upon the chute D. The apron rests in the chute in such a manner that it may be reciprocated.longitudinally thereof, and in so doing agitates, the straw and chaff downwardly over the grate F and into the fan drum.

The-apron 3 is actuated by the crank 4 of a vertical shaft 5 which is journaled in bearings 6, carried by the main frame A of the machine. The shaft is oscillated bya crank 7, which is connected by a link arm 8, to a bracket member 9 secured on the straw rack B. Thus the shaking or reciproeating action of the straw rack B imparts a similar though transversely directed action to the apron 3, through the medium of the mechanism 98754. s

It is understood that suitable modifications ma be made in the general design and structural details of the invention as herein shown and] described, provided, however, that said modifications come within the spirit and scope of the appended claims. Having now therefore fully shown and described my invention, what I claim to be new and desire to protect by Letters Patentis: V

1. In a thrashing machine having a reciprocating straw rack, afandrum, and an A ENT OFFICE? inclined chute for delivering straw from v the straw rack to' the drum, of an apron slidably mounted for longitudinal reciproeating. movement within the chute, and an operative connection between the apron and the rack whereby movements of the latter will actuate the former.

2. In a thrashing machine having a reciprocating straw rack, a fan drum, and an inclined chute for delivering straw from the the straw rack to the drum, of an apron slidably mounted within the chute, a shaft carried by the machine and connected with the straw rack so as to be oscillated thereby," and a crank member extending from the shaft for reciprocating the apron toward and away from the fan drum.

3. In a thrashing machine having a reciprocating straw rack, a fandrum, and an inclined chute for delivering straw from the straw rack to the drum, of an agitator mounted for longitudinal reciprocating movement in the chute, for agitating material downwardly therein, and means operatively connecting the reciprocating straw rack with the agitator, whereby the latter will be actuated by the former.

4. In a thrashing machine, the combination with the main shaker frame and the chute which receives straw therefrom, and delivers it to the blower of the machine, of an agitator mounted for longitudinally reciprocating movement in the chute, and means for transmitting the shaking motion of the shaker frame to the agitator.

5. In a thrashing machine, the combination with the main shaker frame and the chute which receives straw therefrom, and delivers it to the blower of the machine, of an agitator in the chute, and means for transmitting the shaking motion of the shaker frame to the agitator, said means comprising an oscillating device connected with the agitator and a link member connecting the oscillating device with the shaker frame.

6. The combination with the longitudinal- 1y reciprocating shaker frame and the transversely disposed chute of a separator, of an apron member mounted for longitudinal slid able reciprocating movement in the chute, a crank for imparting motion to the apron, and means operatively connecting the crank with the shaker frame.

In testimony whereof I afiix my signature.

JACOB WOLF. 

